#include<stdio.h>
#include<string.h>
int main()
{
    //char c="\b",s2[2];
    //s="abc";
    //s2=s1;
    //int a[3][4],*p=a;
    //int i;
    //for(i=0;++i<4;i++);
    char s1[10]="ABCDE",s2[10]="abc";
    strcpy(s1,s2);
    printf("%s",s1[4]);
    return 0;
}